Home / 7,190.55-10,778.40-5,211.36

Finding the Fourth Proportional to 7,190.55, 10,778.40 and 5,211.36

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Solution

The fourth proportional to 7,190.55, 10,778.40 and 5,211.36 is: 7,811.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,190.55 : 10,778.40 = 5,211.36 : x
  2. Step 2: Convert to fraction form
    7,190.55/10,778.40 = 5,211.36/x
  3. Step 3: Cross multiply
    7,190.55x = 10,778.40 × 5,211.36
  4. Step 4: Simplify right side
    7,190.55x = 56,170,122.62
  5. Step 5: Solve for x
    x = 56,170,122.62/7,190.55
  6. Step 6: Final answer
    x = 7,811.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.